64574671 has 4 divisors (see below), whose sum is σ = 73799632. Its totient is φ = 55349712.

The previous prime is 64574669. The next prime is 64574683. The reversal of 64574671 is 17647546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64574671 - 2¹ = 64574669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64574611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4612470 + ... + 4612483.

It is an arithmetic number, because the mean of its divisors is an integer number (18449908).

Almost surely, 2^64574671 is an apocalyptic number.

64574671 is a deficient number, since it is larger than the sum of its proper divisors (9224961).

64574671 is an equidigital number, since it uses as much as digits as its factorization.

64574671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9224960.

The product of its digits is 141120, while the sum is 40.

The square root of 64574671 is about 8035.8366708141. The cubic root of 64574671 is about 401.1936656127.

The spelling of 64574671 in words is "sixty-four million, five hundred seventy-four thousand, six hundred seventy-one".